LTM4643 datasheet(2/30 Pages) AD

2 / 30 page

LTM4638

Rev. C

For more information www.analog.com

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN ............................................................. –0.3V to 22V

VOUT............................................................. –0.3V to 6V

INTVCC...................................................... –0.3V to 3.6V

RUN ............................................................ –0.3V to VIN

PGOOD, FREQ, COMPa, COMPb,

PHMODE, CLKOUT, FB.............................. –0.3V to 3.6V

MODE/CLKIN, TRACK/SS .....................–0.3V to INTVCC

VOSNS+......................................................... –0.3V to 6V

VOSNS–...................................................... –0.3V to 0.3V

Internal Operating Temperature Range

(Notes 2, 5)............................................ –40°C to 125°C

Storage Temperature Range .................. –55°C to 125°C

Peak Solder Reflow Body Temperature ................. 250°C

(Note 1)

(See Pin Functions, Pin Configuration Table)

BGA PACKAGE

49-LEAD (6.25mm × 6.25mm × 5.02mm)

TJMAX = 125°C, θJCtop = 10°C/W, θJCbottom = 4.2°C/W, θJA = 16°C/W

TOP VIEW

NOTE:

1) θ VALUES ARE DETERMINED BY SIMULATION PER JESD51 CONDITIONS, WEIGHT 660mg

2) θJA VALUE IS OBTAINED WITH DEMO BOARD

3) REFER TO PAGES 21, 22 FOR LAB MEASUREMENT AND DE-RATING INFORMATION

VOUT

VIN

PHMODE

GND

TSENSE–

TSENSE+

CLKOUT

COMPb

FREQ

VOSNS–

MODE/CLKIN

TRACK/SS

VOSNS+

INTVCC

RUN

PGOOD

COMPa

VOUT

ORDER INFORMATION

PART NUMBER

PAD OR BALL FINISH

PART MARKING*

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(NOTE 2)

DEVICE

FINISH CODE

LTM4638EY#PBF

SAC305 (RoHS)

4638

BGA

–40°C to 125°C

LTM4638IY#PBF

SAC305 (RoHS)

4638

BGA

–40°C to 125°C

LTM4638IY

SnPb

4638

BGA

–40°C to 125°C

• Contact the factory for parts specified with wider operating temperature

ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609.

• Recommended LGA and BGA PCB Assembly and

Manufacturing Procedures

• LGA and BGA Package and Tray Drawings

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